Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and more.

Gauging the mass of a black hole is tricky, but astronomers have devised multiple methods to measure the heft of these galactic gluttons ...

A black hole is growing at one of the fastest rates ever recorded, according to a team of astronomers. This discovery from ...

The molecular hydrogen ion H₂⁺ is the simplest molecule. This simplicity makes it a perfect study object for physicists, as ...

Graphene is stronger than steel and a better conductor that copper, making the two-dimensional material of particular ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

It’s a little complicated to weigh a dying person on a hospital bed, but that didn’t matter to Duncan MacDougall. In the ...

As a result of the tetrahedral symmetry of the lattice, a diamond crystal typically contains NV centers in four orientations.

Christopher Nolan’s Interstellar was a phenomenon in 2014. Set in the future, Earth has been struck by a global crop blight.